Be careful - the grass is very slippery when it rains.

小心——下雨时草地很滑。

I like to read when it rains.

我喜欢在下雨的时候读书。

He drives slower when it rains.

下雨时他开车更慢的。

I always wear my mack when it rains.

下雨时我总是穿我的雨衣。

I always wear a galosh when it rains.

下雨时我总是穿防水套鞋。

I run every day except when it rains.

除了下雨天，我每天都跑步。

I always wear my anorak when it rains.

下雨时我总是穿我的防水风衣。

I always wear my wellies when it rains.

下雨时我总是穿我的雨靴。

The road becomes slippery when it rains.

下雨时道路会变得很滑。

I usually take taxis to work when it rains.

下雨时，我通常会乘坐出租车去上班。